Oil-displacer for journal-lubricators.



No. 787,576. PATENTED APR. 18, 1905.

A. H. JOHNSON. OIL DISPLAGEE FOR JOURNAL LUBRIGATORS.

APPLICATION FILED SEPT.14, 1904.

UNirnn rates ALBERT HOIVARD JOHNSON,

Patented April 18, 1905.

PATENT Oriana.

OF TAKOMA, MARYLAND.

SPECIFICATION forming part of Letters Patent No. 787,576, dated April18, 1905.

Application filed September 14:, 1904. Serial No.

To In whom, it 'n'o/r/ concern:

Be it known that LALBERT HOWARD J GEN- SON, a citizen of the UnitedStates, residing at Takoma, in the county of Montgomery and State ofMaryland, have invented certain new and useful Improvements inOil-Displaeers for Journal-Lubricators; and I do hereby declare the:following to be afull, clear,

and exact description of the invention, such as will enable othersskilled in the art to which 1 it appertains to make and use the same. I

In journal-lubricators in which the lubrication of the journal ismaintained from a reservoir the oil after being used a certain length oftime becomes unfit for further use from different causes, and the usualprovision for its discharge from the reservoir pre paratory tointroducing a fresh supply is by a passage in the bottom of thereservoir controlledbyascrew-plugorpetcock. The screw and the petcockare liable to become loose and allow leakage of the oil, and from thiscause the unobserved loss of the lubricant is a seri ous matter,particularly in electric motors, which have been thereby renderedinoperative and injured.

My invention provides for displacing or ejecting the used oil from thereservoir by a plunger arranged to control a bore duct or channelbeneath or outside of the reservoir, j having communication with itslowest part and open to the air above the level of the oil in thereservoir.

A feature of my invention is that the bore duct or channel serves alsothe means of supplying the reservoir, the means for gaging the supply ofoil, the means for allowing the displacing or ejecting the used oil, andthe means for forming a casing for the discharging or ejecting functionof the plunger, while the latter serves as a stopper for the bore orduct.

The accompanying drawings illustrate my invention in the form in which Iprefer to use it; but it will be understood that my invention is notlimited to the precise form and 1 construction herein illustrated anddescribed, as various modifications and changes may be made withoutexceeding the scope of the invention or the claims in which it is setout.

Referring to the drawings, Figure 1 shows in vertical transverse sectionthe oil-reservoir of a journal-bearing having applied thereto myinvention for ejecting the used oil from the reservoir. Fig. 2 is asectional view showing the plunger in the position to eject the oil.Fig. 3 shows an electric motor with the oil-reservoir thereof containingmy invention. Fig. 4 shows in longitudinalsection a journal-bearing andlubricating-reservoir having my invention applied thereto. Fig. 5 showsone of the motor end plates or shields with my invention appliedthereto.

In the drawings I have shown journalbearings and oil-reservoirs of twoforms, in one of which oil-supplying rings are provided; but myinvention may be used with or without automatic oilfeeds.

In Fig. 1 the oil-reservoir is shown as being formed as an integral partof a circular web or shield 1, from which the reservoir-casting 2projects or forms a part with its lower half 3 preferably of V shape,the better to adapt it for conveniently carrying out my inven tion. Inthe reservoir an oil-feeding ring 4 rests upon and depends from theshaft 5,

while in Fig. 4 is seen the journal-bearing for the shaft and itssupport within the oil-reservoir. The walls of the reservoir (seen inFig. 1) diverge upward in opposite directions from the lowestangle-point 6, and within these walls are formed a correspondinglyshapedbore or duet,-the one part 7 being preferably of larger diameter thanthe bore 8 on the other side, both open at their upper ends and bothmeeting at the lowest point. A wall passage or slot 9 forms acommunication between the reservoir and the larger bore at the bottom ofthe reservoir. A plunger 10 fits and closes the larger bore or channeland closes the passage or slot by which it and the reservoir havecommunication. The plun ger is preferably of greater length than thebore and terminates in a knob or handle 11, by which it is reciprocatedwithin the bore in its function of discharging or ejecting the used oilfrom the bores or ducts, and to render this plunger function effectivethe plun- 'er-receiving here may have a length greater than that of thesmaller bore. As a means of preventing the plunger from being entirelywithdrawn from its bore a screw 12, entering the wall at the upper endof the bore, engages a longitudinal groove 13 in the surface of theplunger, and this groove being closed at the inner end of the plungerallows its full stroke, but prevents it from being drawn entirely outexcept for supplying the reservoir with oil when the screw is removed.Obviously any suitable means may be devised for this purpose. Insupplying the oil through this larger bore or duct it passes therefromthrough the wall passage 9 or slot into the reservoir until it attains alevel therein that will cause it to be seen at the open end of the smallbore, so that the latter I thereby forms a gage for the oil-supply, andthere can be no leakage at either end of the bore or channel. When it isdeemed that the oil is unfit for further use, the plunger is withdrawnto open the wall passage or slot from the reservoir, letting the oilflow therefrom into the bore. From thence it is ejected by driving theplunger in, and this operation of the plunger is repeated until thereservoir is emptied, when it is supplied with fresh oil and thesupply-duct closed by the plunger; but whether the outlet passage orslot from the reservoir be open or closed there can be no leakage,because the filling of the bores can only be to the level of the oil. Iprefer to make the plunger branch of the bore of comparatively largerdiameter and of greater length than the discharging branch of the bore,because thereby the plunger has eflicient ejecting capacity.

A supply-opening may be made in the up per wall of the reservoir, closedby a lid or other means. The angular sides form a bottom ridge, so thatthe oil flowing out of the open end of the discharge-duct under theejecting force of the plunger will run down the incline and collect atand drip from this bottom ridge. Referring to the communication betweenthe reservoir and the plunger duct or channel, I prefer to make it inthe form of a slot rising from the bottom of the reservoir and about aswide as the diameter of the plunger, so that it will not be liable tobecome clogged and will allow a free outlet of the oil. The lower end ofthe slot stands obliq ue to aflord the plunger suiiicient ejectingaction.

I claim 1. In a j ournallubricator, the oil-reservoir provided withbores or channels open at both ends above the level otthe Oll therein,said reservoir at its bottom having communication with the bore orchannel, and a plunger adapted to close and open said communication andto eject from the open end of said bore the oil from the reservoir.

2. I11 a journallubricator, the oil-reservoir having its lower portionof V shape, a bore or channel in each side wall meeting at their lowerends and open at their upper ends, there being a passage or slot leadingfrom the reservoir into one of said side bores, and a plunger adapted toclose and to open said passage or slot and to eject the oil from thereservoir through said bores.

In a journal-lubricator, the oil-reservoir having its lower portion of Vshape, there being a bore or channel in each side wall meeting at theirlower ends and open at their upper ends, one of said side wall bores ofgreater diameter than the other, and a passage or slot leading from thereservoir into the larger of said side bores, and a plunger adapted toclose and to open said passage or slot and to eject the oil from thereservoir through the small bore.

4. In a j ournal-lubricator, the oil-reservoir provided with bores orchannels open at both ends above the level of the oil therein, saidreservoir having a bottom communication with the bore or channel, aplunger adapted to close and to open said communication and to ejectfrom the open end of said bore the oil from the reservoir, and meanswhereby the plunger is prevented from being with drawn from said bore orchannel.

5. In a journal-lubricator, the oil-reservoir, there being a channel orduct around its under side and flanking both its sides, and a passage orslot in the bottom of the wall leading from the oil-reservoir into oneside of the duct or channel, and a plunger adapted to be reciprocated inone side of the channel or duct and to control the communication betweenthe reservoir and said channel, for the purpose stated.

6. In a j ournal-lubricator, the oilreserv'oir, there being a duct orchannel belox T the same having communication below the same open at apoint above the level of the oil, and a plunger within said duct orchannel for ejecting the oil from the reservoir.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ALBERT HOWARD JOHNSON.

Witnesses:

A. E. H. JOHNSON, GUY H. JoHNsoN.

